Kooning ajjd hsocess of making same



H. A. (IUMFER.

ROOFING AND PROCESS OF MAKING SAME. I

APPLICATION FILED IUD/3. I918 Patenmd; @ept. 9, 1919.

facture of HARRY A CUMFER, OF CHICAGO, ILLINOIS.

ROOFING AND PROCESS OF MAKING SAME.

Specification of Letters Patent.

Patented Sept. 9, i919.

Application filed July 3, 1918. Serial No. 243,095.

To all whom it may concern:

Be it known that I, HARRY A. CUMFER, a citizen of the United States,residing in the city of Chicago, county of Cook, and State of Illinois,have invented certain new and useful Improvements in Roofing andProcesses of Makin Same, following is a 'speci cation.

This invention relates to improvements in roofing and process of makingsame and has among its salient objects, to provide a construction inwhich a roofing felt is corrugated lengthwise of the roofing sheet orstrip so as to avoid substantial shortening of the normal width of theroofing sheet; to provide a construction of the character referred to inwhich the corrugated roofing felt or fabric I is impregnated and coatedeither on one or both sides with an asphaltic or bituminous composition;to provide a novel process of forming said roofing and in general toprovide an improved construction of the character referred to.

Heretofore, various forms of sheets or blanks such as the sheets orblanks for forming walls of paper boxes have been corrugatedtransversely of the length of the fiber. This method of corrugation hasnot been practical in roofing for the reason that to so corrugate theroofing felt materially shortens the paper to such an extent as toprevent its being practical from a manufacturing standpoint. In otherwords, with a given quantity of roofing felt the manufacturer, if hecorrugated it transversely would so shorten the paper as to materiallyreduce the quantity of his finished out-put.

Nevertheless it has been recognized for many years that a corrugatedroofing felt would materially add to the strength and stability of thefinished article.

I have discovered that if the roofing felt he corrugated the len ,th ofthe sheet or longitudinally or paral el with the fibers of the felt thateffective corrugations will be produced without at the same timesubstantially lessening the width of the sheet. I have furtherdiscovered that if the corrugated blank be then impregnated or coatedwith an asphaltic and bituminous composition so as to fill thecorrugations, that a very durable construction can be obtained and atthe same time have suficient flexibility to answer the purpose. in themanu this felt, it is run from the supof which the ply reel through apair of opposed corrugated rollers, the corrugations of which extendlongitudinally of the length of the felt. After these corrugations areformed, the roofing is then run through a suitable saturating andcoating tank and through squeeze rollers and then through coolingrollers. The roofing felt, can, of course, be coated with a granularfacing if desired. In order that the invention may be more clearlyunderstood, the accompanying draw: ings are made a part of thespecification in which,

Figure 1 is a fragmentary vertical sectional view showing the manner offirst corrugating and then saturating the sheet.

Fig. 2 is a fragmentary transverse sectional view on an enlarged scaleof the finished product.

Referring to the drawings, 1 designates a roll of unsaturated felt whichis run between a pair of corrugated rolls 2 and 3 which rolls are soformed on their peripheries as to form corrugations longitudinally ofthe fibers of the felt. The corrugated dry felt then passes over therolls, 4;, 5, G and 7 through a tank 8 containing the saturating liquidor hot asphalt. Presser rolls 9 and 10 are also provided, the formerbeing equipped with cleaner members 11. In Fig. 2 is shown the finishedsheet provided with corrugations a.

In its broader aspects, the invention is not limited to the particularuse shown as for example flooring felt might be treated in the samemanner.

I claim as my invention:

1. A roofing product consistin of a felt. or fabric like foundationprovi ed with a series of corrugations extending substan tially acrossthe width of the foundation and extending longitudinally of the fibersof the felt and a bituminous composition impregnating the corrugatedfelt and forming a coating on one or both sides thereof.

2. A process of making roofing consisting in feeding a sheet of roofingfelt to a pair of opposed corrugated rolls arranging the rolls so thatthe corrugations are formed longitudinallyof the fiber of the felt andextending substantially across the width thereof and then saturating thecorrugated felt with a bituminous composition.

HARRY A. CUMFER.

